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5 pg/mL for the PL signal and 8.9 pg/mL for the SERS signal in the range of 10 pg/mL-100 ng/mL. Depending on the plasmon-enhanced PL mechanism and upconversion fluorescence-enhanced SERS principle, plasmonic NP-semiconductor composites show potential prospects in the establishment of multimodal optical biosensors for the quantitative and accurate evaluation of analytes in a complex food matrix.In this study, the possibilities of noise tailoring in filamentary resistive switching memory devices are investigated. To this end, the resistance